Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Constraint' not found in C:\SistemasPHP\ccp\vendor\symfony\doctrine-bridge\Validator\Constraints\UniqueEntity.php:24 Stack trace: #0 {main} thrown in C:\SistemasPHP\ccp\vendor\symfony\doctrine-bridge\Validator\Constraints\UniqueEntity.php on line 24